Influence of obestatin on the histological development of the small intestine in piglets during the first week of postnatal life

Obestatin is a gastrointestinal peptide having wide-ranging effects on cell proliferation; however, its mechanism of action remains poorly understood. Thus, the aim of the study was to elucidate the effect of exogenous obestatin on the postnatal structural development of the small intestine. Seven-d...

Full description

Saved in:

Bibliographic Details
Published in:	Animal (Cambridge, England) Vol. 14; no. 10; pp. 2129 - 2137
Main Authors:	Woliński, J., Szczurek, P., Pierzynowska, K., Wychowański, P., Seklecka, B., Boryczka, M., Kuwahara, A., Kato, I., Drahanchuk, O., Zaworski, K., Pierzynowski, S. G., Słupecka-Ziemilska, M.
Format:	Journal Article
Language:	English
Published:	Cambridge, UK Cambridge University Press 01-10-2020 Elsevier Limited Elsevier
Subjects:	Animals Animals, Newborn Antibodies Apoptosis Automation Basic Medicine Cell cycle Cell growth Cell proliferation Duodenum enterocytes Enzymes Farmaceutiska vetenskaper Fysiologi Gastrointestinal system Gastrointestinal tract Ghrelin Histomorphometry Hogs Ileum Insulin Intestinal Mucosa Intestine Intestine, Small Jejunum Keywords Labeling maturation Medical and Health Sciences Medical research Medicin och hälsovetenskap Medicinska och farmaceutiska grundvetenskaper Mitosis Mucosa neonatal piglets Nutrition obestatin Peptides Pharmaceutical Sciences Physiology Physiology and Functional Biology Proteins Research Article Small intestine Stomach Swine - growth & development Poland Germany obestatin neonatal piglets maturation intestinal mucosa enterocytes
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Obestatin is a gastrointestinal peptide having wide-ranging effects on cell proliferation; however, its mechanism of action remains poorly understood. Thus, the aim of the study was to elucidate the effect of exogenous obestatin on the postnatal structural development of the small intestine. Seven-day-old piglets with an average BW of 1.56 ± 0.23 kg were divided into four groups (n = 10) that received intragastrically obestatin (2, 10 or 15 μg/kg BW) or vehicle. After a 6-day experimental period, morphological analysis of gastrointestinal tract and small intestine wall (mitosis and apoptosis indexes, histomorphometry of mucosa and muscularis layers) was performed. The study revealed a seemingly incoherent pattern of the histological structure of the small intestine among the experimental groups, suggesting that the effect of obestatin is both intestinal segment specific and dose dependent. Histomorphometric analysis of the small intestine showed that higher doses of obestatin seem to promote the structural development of the duodenum while simultaneously hindering the maturation of more distal parts of the intestine. Intragastric administration of obestatin increased the crypt mitotic index in all segments of the small intestine with the strongest pro-mitotic activity following the administration of obestatin at a dose of 10 and 15 μg/kg BW. The significant differences in the number of apoptotic cells in the intestinal villi among the groups were observed only in proximal jejunum and ileum. In conclusion, it seems that obestatin shows a broad-spectrum of activity in the gastrointestinal tract of newborn piglets, being able to accelerate its structural development. However, the varied effect depending on the intestinal segment or the concentration of exogenous obestatin causes that further research is needed to clarify the exact mechanism of this phenomenon.
ISSN:	1751-7311 1751-732X
DOI:	10.1017/S1751731120000919